import { login, logout, getInfo } from '@/api/user'
import { getToken, setToken, removeToken, setRole, removeRole } from '@/utils/auth'
import { resetRouter } from '@/router'
const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    avatar: ''
  }
}

const state = getDefaultState()

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  },
  SET_ROLES: (state, roles) => {
    state.roles = roles
  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { id, psw, type } = userInfo
    return new Promise((resolve, reject) => {
      login({ id: Number(id.trim()), psw: psw, type: type }).then(response => {
        const { data } = response
        commit('SET_TOKEN', data.token)
        setToken(data.token)
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // get user info
  getInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
      // 通过上面的令牌验证 servlet，得到返回值
      // {
      //  code : 200,
      //  message: "获取token成功",
      //  success: true,
      //  data: "{
      //		"role" : "user",
      //		"avatar": "https://wpimg.wallstcn.com/f778738c-e4f8-4870-b634-56703b4acafe.gif",
      //		"introduction":"I am an user",
      //		"name" : "User"
      //	}"
      // }
        const { data } = response

        if (!data) {
          return reject('验证失败，请重新登录')
        }
        const { name, avatar, roles } = data
        commit('SET_NAME', name)
        commit('SET_AVATAR', avatar)
        resolve(data)
        setRole(roles)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        removeToken() // must remove  token  first
        removeRole()
        resetRouter()
        commit('RESET_STATE')
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      removeToken() // must remove  token  first
      commit('RESET_STATE')
      resolve()
    })
  }
}

export default {
  namespaced: true, // 不会造成多个模块名字冲突
  state,
  mutations,
  actions
}

